Improved mode of condensing noxious vapors from lard-rendering



S. DAVIS. MOD-E 0F GONDENSING NOXIOUS VAPORS FROM LARD RENDERING, &c.

No. 65,884. Patented June 18, 1867.

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- S.A M U'E'L. DAVIS, -OF NEW YORK; N. Y.

Letters Patent No. 65,884, dated Jame 18, 1867.

IMPROVED MODE 0? CONDEN SING- NOXIOUS VAPORS FROM LARD-RENDERING, (he.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, SAMUEL DAVIS, of thccity and county of New York, have invented a new and improved Method of Condensing Vapors: and I do hereby declare that the following is'a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being bad to the accompanying drawings, forming'part of this specification.

This improvement relates to the manner in which the steam and vapor generated in fut-boiling and other processes of a similar nature are condensed and rendered harmless; and the invention consists in connecting a coil of pipe'to' the kettle in which such boiling is done, and thereby conducting the steam and vapor which rise from the contents of the kettle, through a cistern containing cold water, in the manner hereinafter described.

The drawing represents a central vertical section of my condenser.

A is the cistern; B is the coil in the cistern; C is the pipe which conducts the vapor from the kettle to the coil; D is the pipe which receives the condensed vapor in the forni of liquid, or otherwise, and discharges it into the sewer; E is a pipe which conducts a stream of cold water into the cistern; F is an overflow pipe.

Similar letters of reference indicate corresponding parts.

The arrangement is easily understood from the drawing. 7

The pipe'C is connected with the upper part or top of the boiler or kettle, and (the boiling being done in a closed vessel) the steam and vapor which rise are conducted oil' through the coil, and being surrounded with cold water, are condensed, and pass off through the pipe D. A constant stream of cold water is beingdischarged through the pipe E, by which means the cistern is kept full, or nearly so. Thc overilow pipc F carries oil the water, after the cistern becomes filled, as fast as it enters, taking it from the surface, when the temperature is highest. The cold water from the supply pipe E,.sinks to the bottom or lower part of the cistern, thus keeping the water in the cistern comparatively cool. The overflow pipe, as will be seen, is connected with the discharge pipe D, and, in this connection, it performs a. double duty. The current of water, which is constantly passing through it, has a tendency to produce a vacuum in the coil, thereby causing the vapors to be discharged from the kettle with increased velocity. By this arrangement, the fat-boiling process, which has hitherto been considered a nuisance, and justly so, becomes as agreeable and unobjcc tionablc as any other occupation, even in a densely populated neighborhood.

I claim as new, and desire to secure by Letters Patent 1. The arrangement of the cistern A, the coil B, andthc pipes C, E, D, and F, in combination with a kettle or boiler, for the purposes herein set forth.

2. Discharging a stream of water into the discharge pipe of a boiler, for the purpose of increasing the draught from the boiler, substantially as described.

SAMUEL DAVIS.

Witnesses:

WM. F. MCNAMABA, ALEX. F. Roesnrs. 

